After noticing that most of the lifeguards at the public pools used by Latino and African-American kids were white, the Phoenix aquatics department decided to try to recruit minorities. More than 90 percent of the students at Alhambra High are black, Latino or Asian. On a recruiting effort there over the winter, the city's Melissa Boyle tells students she's not looking for strong swimmers. Like many under-resourced schools, Alhambra doesn't have a swim team. "We will work with you in your swimming abilities," Boyle says. Boyle's colleague Kelly Martinez takes on the delicate task of explaining the scenario the city...